APN
- 3-Arylpropiolonitriles
- Access Point Name
- Acute pyelonephritis
- Acyl peroxy nitrates
- Advanced practice nurse
- African Parks Network
- Alberta Playwrights Network
- Algebraic Petri net
- Alpena County Regional Airport
- Amazon Web Services
- Americanist phonetic notation
- Americans for Peace Now
- Animal Planet (Australia and New Zealand)
- Apple Push Notification service
- Application-Layer Protocol Negotiation
- Asia-Pacific Network for Global Change Research
- Assessor's parcel number
- Novosti Press Agency